172
Step Action Value(s) Yes No
7
Check pressure drop
Check manifold vacuum supply to regulator
Is the pressure within specifications?
Replace the
regulator. Go
to Step (8)
Verify the fil-
ter is OK. Go
to Step (8).
8
Remove all test equipment except the moni-
tor.
Using the monitor, reset the adaptive learn.
Connect any disconnected components, fus-
es, etc.
Using the monitor, clear DTC information
from the ECM.
Turn the ignition OFF and wait 30 seconds.
Start the engine and operate the vehicle to
full operating temperature.
Observe the MIL.
Observe engine performance and driveabili-
ty.
After operating the engine within the test pa-
rameters of code, check for any stored
codes.
Does the engine operate normally with no stored
codes?
System OK.
Go to On-
Board
Diagnostics
System
Check/
Malfunction
Indicator
lamp.
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